Report

FZJ-2016-05699

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Cäsium-Sorptionsuntersuchungen an graphitischen Reaktorwerkstoffen

Kwasny, J. ; Hilpert, K.FZJ* ; Nickel, H.FZJ*

1990
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/12571

Report No.: Juel-2353

Abstract: A Knudsen cell-mass spectrometer System has been developed for vapour pressure measurements to determine the sorption isotherms of Cs for graphitic reactor materials. Double Knudsen cells heated by high frequency were employed in this system. A highvacuum furnace with a specially designed oven-cell was used for isopiestic experiments carried out in addition ta the mass spectrometric studies. The Cs equilibrium partial pressure was measured at temperatures 950 and 1820 K oves A3-3 fuel elementmatrix with Cs concentrations between 0.17 and 34.76 mma1/kg. Sorptionisotherms of Cs according to Henry and Freundlich wereevaluated from the vapour pressure data. The sorption enthalpies for CsTob tained indicahte a strong boned by chemisorption. Cssorption of the "reactor graphites" A3-3, A3-27, ASR -1RG, ASR-1RS, ASR-2RS, PAN, P3-JHAN, PXA-2N, H-451, H-327, IG-110 and thecoat-mix materials Cm-100 and Cm-30 resulted by the isopiestic method. It could be shown that graphitic reactor materials wich phenolic resin binder are able to bind a substantially higher amount of Cs by sorption than "reactor graphites" without this binder. More information about the content of this report is given in chapter 8 "Zusammenfassung und Ausblick" (Summary and outlook).

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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Database coverage:

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